Stephen Fry explains how GPS and the Internet work

Writer, broadcaster and National Treasure™ Stephen Fry has struck again. The ubiquitous luvvie revealed the depths of his technical understanding on the the panel show QI XL, the self-styled “home of highbrow know-how”.

First, GPS. How does that work, Stephen?

“You send a signal from your GPS device,” he explained. “You’ve got to be at least three, usually four or five satellites – that receive your signal. And the difference in time it takes to get from one satellite to the other to the other, which is milliseconds, allows them to calculate your position to within 10 metres.”

That’s amazing.
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